ES2716957T3 - Rolling carriage for a guided transport system on rails, as well as a transport system with a trolley of this type - Google Patents

Description

DESCRIPTION

Rolling carriage for a guided transport system on rails, as well as a transport system with a trolley of this type

Technical field

The present invention relates to the field of transport technology. It refers to a rolling carriage for a rail-guided transport system according to the preamble of claim 1.

It also relates to a transport system with a trolley of this type.

State of the art

In the production and subsequent processing of goods, as well as in the collection of orders and the packaging of orders, the automated transport of products is very important. Gravity transporters, in particular gravity suspension transport systems, are characterized in this case, in addition to other reasons, because they allow a displacement of the transport of products from the ground to the other space zones not used inside or outside of buildings Often the suspended transport installations are fixed for this reason in an inverted position on supports, which are arranged in the ceiling, the walls or in individual columns fixed to the floor.

Suspended transport systems are also used as a stop between two or more work processes with different speeds. In this way, interconnected processes can be temporarily and / or spatially decoupled, for example, faults in processes can be solved without having to stop the remaining parts of a process chain. In the same way, cadence differences in processing can be reduced in this way.

The suspension conveyors by gravity are suitable in many areas in particular for the establishment of stops. This on the one hand due to the aforementioned better use of space. On the other hand they are relatively energy-saving, since, unlike for example suspended transport systems of forced transport, they do not require driving means that guide along the running rails, such as drive chains and often present only few short sections of forced transport section. As a result, the gravity suspension conveyors can also be reduced or expanded in a relatively simple and inexpensive manner in a precise manner in relation to modified production requirements.

For the safe operation of gravity suspension conveyors it is important that the used transport bodies (also called shuttles) have good, non-changing advancing properties. In particular, it must be ensured that the transport bodies in parts of the route transported by gravity do not brake undesirably or even stop, since this would lead to delays or interruptions in transport. As transport bodies for gravity suspension conveyors, rolling carts with wheels or rollers are often used, since they generally have a lower resistance to movement than those with so-called sliders, which in turn have a resistance to movement. movement dependent on speed.

From the publication WO 2016/030275 A1 of the Applicant is known a rolling carriage according to the order for a conveyor, which has a carriage body configured to surround a running rail, comprising a first and a second arm, which are joined through a connecting section, the first arm having, on its inner side, first rollers and presenting the second arm, arranged on its inner side, second rollers and presenting the joining section, arranged on its inner side , third rollers. In this case, the first and second rollers are arranged vertically and the third rollers are arranged horizontally.

With the known solution, a safe advancing carriage is made available, in particular for a gravity transport installation. A rolling carriage of this type is suitable for goods of different dimensions and / or masses, as well as for transport routes with almost any route development. A rolling carriage of this type can also be produced with a relatively low part price. Finally, with the rolling carriage of WO 2016/030275 A1, a safe and simple transport system can be realized, in particular a gravity transport system.

The roller carriage known from WO 2016/030375 A1 presents with its roller pairs equally arranged one after the other in the advancing direction and the corresponding U-shaped carriage body in the longitudinal direction a length which is added when in the transport system a plurality of similar rolling carriages are disposed one behind the other very closely, giving rise to a remarkable total length of the series of rolling carriages. Due to this, during the use of many rolling carriages in the system, a considerable rail length of the rolling rails is used, which leads to a greater extension of the rail system.

In addition, this is achieved when, for example, individual goods are transported or stored in a suspended manner in the rolling carriages, which have an extension that is clearly in the forward direction. below the length of the rolling carriages (eg T-shirts, flat printing products, etc.), during transport or during storage in the transport system only a limited density per unit of rail length, which it is determined above all by the length of the rolling carriages in the forward direction.

Document EP 0 856 480 A1 proposes a guided transport means on rails, in particular for transporting printing products, which comprises a transport means body with two arms, which have on their sides directed towards each other correspondingly two sliding or rolling means arranged in the manner of a cross with diametrically opposed displacement, the sliding or rolling means being arranged in the direction of development of the arms with a mutual separation such that a guide rail finds space between the sliding means or rolling.

This means of transport and a transport installation equipped therewith should be with respect to previously known means of transport, which are configured relatively large and heavy and thus have the disadvantage that printing products can be transported with reduced speed , and that the printed products present a relatively large mutual separation in the transport flow and thus limit the transport efficiency of the transport installation, which are more economically advantageous.

As can be seen, however, in the figures of EP 0856480 A1, the densest occupation of the transport means is achieved mainly because the extension of the transport means in the direction of transport is drastically reduced and the rollers arranged after others in the forward direction approach each other as close as possible. Additionally, according to Figure 6 of EP 0856480 A1, a minimum nesting of the means of transport is achieved.

Representation of the invention

It is therefore a task of the invention to indicate a rolling carriage and a corresponding transport system, which allow a clearly higher occupation density of the rolling carriages in a series without loss in the advance stability and guidance on rails. of rolling carriages.

The task is solved by the features of claims 1 and 12.

The roller carriage according to the invention is provided for a transport system guided on rails, in particular a gravity conveyor, a plurality of equal rolling carriages being mounted in this transport system on a rolling track extending in one direction longitudinally of rail, one after the other in the longitudinal direction of the rail and displaceable in the longitudinal direction of the rail, the roller carriage having the guide rail running along the rail in the longitudinal direction of the rail, a first and a second set of rolling rollers verticals, which in a roller carriage body are mounted transversely each other with respect to the longitudinal rail direction in a rotatable manner about a corresponding axis and spaced apart from each other along the corresponding axis.

It is characterized in that the internal separation of the rolling rollers in the first set of rolling rollers is larger by a predetermined measure than the outer spacing of the rollers in the second set of rollers, and that the housing of the first and second pairs of rolling rollers is configured in the roller carriage body in such a way that two successive carriages can be inserted into one another so that space is saved. In this case, the second set of rollers of one of the rolling carriages ends up being between the rollers of the first set of rollers of the other rollers.

By means of this mode of arrangement of the rolling rollers, a nesting of adjacent running carriages can be achieved without taking into account the separation of the roller assemblies, which in case of high stability of the rolling carriages enables a clearly increased occupation density.

In the simplest case, the roller roller assemblies form a pair of rollers in each case. However, it is also conceivable to provide sets of rolling rollers with more than two rollers per set, in particular with several pairs of rollers.

As a suitable rolling rail, a rolling rail is in particular considered, as disclosed in WO 2016/030274 A1 of the Applicant.

A configuration of the running carriage according to the invention is characterized in that the running carriage body is configured to surround the running rail and comprises a first and a second arm, which are separated from one another transversely with respect to the longitudinal direction of the rail and joined together through a joining section, and the rolling rollers of the first set of rolling rollers are in each case rotatably disposed on the inner side of the arms.

In particular, they are configured on the inner sides of the arms next to the rollers of the first set of rolling rollers and beyond the rolling rollers of the first set of rolling rollers, first angular supports projecting inwards and bent in Longitudinal rail direction, in particular shaped, in whose free ends the rolling rollers of the second set of rollers are rotatably arranged.

According to another configuration, the rolling rollers of the first and second set of rolling rollers can be arranged in mirror symmetry with respect to a plane of vertical symmetry of the running carriage.

In addition, the rolling carriage can have a third set of rollers with a first and a second horizontal roller, the horizontal rollers of the third set of rollers being arranged on the inner side of the connecting section. one after the other in the longitudinal direction of the rail, the axes of the rolling rollers of the third set of running rollers being on the vertical symmetry axis of the running carriage, and the first highest horizontal running roller being arranged at a ratio of one to the other. predetermined measure, that the second horizontal rolling roller, so that when they are introduced one into the other saving space two successive rolling carriages, the first horizontal rolling roller of one of the rolling carriages ends up being above the second roller of horizontal rolling of the other trolley.

The second horizontal rolling roller can be arranged in particular directly on the upper side of the connecting section in a rotatable manner, the first horizontal rolling roller being rotatably disposed on the free end of a second angular support, which is further configured beyond the second horizontal rolling roller projecting inwardly and bent in the longitudinal direction of the rail on the inner side of the joint section, in particular shaped.

Another configuration of the running carriage according to the invention is characterized in that a fixing section is provided on the body of the running carriage.

In this fastening section, a good to be transported can be detachably fixed.

Another configuration of the running carriage according to the invention is characterized in that the rolling rollers of the first set of running rollers are configured as ball bearings overinjected with a roller body.

In particular, the rollers of the first set of rollers can be wider than the rollers of the second set of rollers.

In addition, a coupling element may be arranged which, from the first and the second arm of the trolley body, protrudes outwards transversally with respect to the longitudinal direction of the rail, in particular in the form of a pin, through from which a coupling can be made on the trolley with an external element.

According to another configuration of the invention, the roller carriage body is formed in one piece.

The transport system according to the invention comprises at least one roller carriage according to the invention, as well as at least one roller rail adapted to the roller carriage.

As already mentioned, this rolling rail can be configured as disclosed in WO 2016/030274 A1 of the applicant.

Brief explanation of the figures

The invention is explained in more detail below by means of embodiments in relation to the drawing. They show:

FIG. 1 shows, in a side view, a section of a rolling track of a transport system according to an embodiment of the invention with a plurality of rolling carriages, which to the left are progressively joined together, giving rise to a sequence with maximum density ;

Figure 2 shows the configuration of Figure 1 in a perspective representation, which discloses in particular the cross section profile of the raceway;

FIG. 3 shows an embodiment of a roller carriage according to the invention in a view diagonally from above;

Figure 4 a top view from above of the trolley of Figure 3;

Figure 5 a perspective view of the running carriage of Figure 3 from the opposite direction; Figure 6 is a view of the running carriage of Figure 3 in the forward direction; Y

Figure 7 is a perspective view of the tread carriage of Figure 3 with the planes for the indicated roller bearing assemblies and the indicated plane of symmetry.

Pathways for the realization of the invention

In Figure 1 and Figure 2 a section of a transport system or conveyor 100 according to an embodiment of the invention is reproduced in a side view (Figure 1) and in a perspective view diagonally from above (Figure 2) . The figures show a section of a rolling track 20 extending straight in a longitudinal direction of rail, comprising two U-shaped guide channels 20a and 20b, opposite one another, lateral, open towards the outside, as well as a guide channel 20c in the form of a U, central, open downwards. The guide channels 20a, 20b and 20c extend parallel in the longitudinal direction of the rail (additional details of the rolling track of document W or 2016/030274 A1 are disclosed).

In the rolling track 20, several rolling carriages 10a-e of the same type are movably mounted in the longitudinal direction of the rail, of which the three left-hand rolling carriages 10a, 10b and 10c are shown nested with each other at maximum density, while the remaining rolling carriages 10d and 10e are not nested and can move freely and with sufficient space between them. From Figure 1 it is revealed by comparing the rolling carriages 10a-c with the rolling carriages 10d or 10e, that in the nested arrangement two running carriages occupy approximately the same length L1 in the forward direction as long as it is a single carriage of rolling (length L2). With respect to the configuration disclosed in WO 2016/030275 A1, this results in an increase in the load density for the rolling carriages at the rate of factor 2 for the embodiment shown here.

The structure of a single trolley 10 according to the exemplary embodiment results from Figs. 3-7. The trolley 10 structured symmetrically giving rise to a plane of vertical symmetry (E1 in Figure 7) presents for the guidance by the rolling track 20 and for the accommodation and introduction of the load in the raceway 20, arranged one after another in the longitudinal direction of the SLR rail (from the German Schienenlángsrichtung), a first and a second set of vertical rollers 16a, 16b or 17a, 17b, which in the example are configured as pairs. The first set of rolling rollers 16a, 16b is arranged in a vertical plane E2 (FIG. 7) and oriented perpendicular with respect to the direction of travel. The second set of rollers 17a, 17b is arranged in a second plane E3 (Figure 7) vertical and oriented perpendicular with respect to the direction of travel.

The rollers 16a, b and 17a, b are mounted in a rotatable manner on a roller carriage body 11 which comprises the roller rail 20 from below, in each case transverse to the longitudinal direction of the rail in the planes E1 and E2 around a corresponding axis (A1 or A2) and separated from each other along the corresponding axis (A1 or A2). The inner clearance (D1 in Figure 6) of the rolling rollers 16a, b in the first set of rolling rollers is larger at a rate of a predetermined measure than the outer spacing (D2 in Figure 4) of the rollers of rolling 17a, b in the second set of rolling rollers. This measurement is selected in such a way that the second set of rollers 17a, b of an adjacent carriage can be housed between the rollers 16a, b of the first set of rollers. To enable this, the accommodation of the first and second roller roller assemblies 16a, b or 17a, b in the roller carriage body 11 is configured in such a way that two successive trolleys (for example, the carriages of rolling 10a and 10b of Figure 1) can be introduced into each other so that space is saved, as the second set of running rollers 17a, b of the running carriage 10a between the first set of running rollers 16a remains, b of the other carriage 10b.

The roller carriage body 11, which, as already mentioned, is configured to surround the rolling rail 20, has a first and a second arm 13a and 13b. The two arms are separated from one another transversely with respect to the longitudinal axis of rail or longitudinal direction of rail and joined together through a joining section 11a. The rollers 16a, b of the first set of rolling rollers are correspondingly arranged on the inner side of the arms 13a, b in a rotatable manner.

The rollers 16a, b of the first set of rolling rollers, which due to the geometry of the carriage body 11 absorb most of the load, are wider at a ratio of a multiple than the rollers 17a, b of the second set of rollers. The rollers 16a, b of the first set of rolling rollers are in particular mounted on ball bearings, preferably configured as ball bearings which are overinjected with a roller body. The rollers 17a, b of the second set of rolling rollers are configured in front of them as narrow wheels, which are rotatably mounted without special accommodating means on an axis.

In order that the rollers 17a, b of the second set of rollers can be arranged with respect to the rollers 16a, b of the first set of rollers, in each case displaced towards the interior, they are configured on the inner sides of the arms 13a, b next to the rollers 16a, b of the first set of rolling rollers and beyond the rolling rollers 16a, b of the first set of rolling rollers, first angular supports 14a, b projecting inwards and bent in the longitudinal direction of SLR rail, in particular shaped, in which Free ends are arranged on the inner side of the rollers 17a, b of the second set of rollers in a rotatable manner.

While the trolley 10 is mounted and advanced with the rollers 16a, b of the first set of rollers and the rollers 17a, b of the second set of rollers in the lateral guide channels 20a and 20b of the running rail 20, a third set of running rollers with a first and a second horizontal running roller 18a and 18b is provided on the running carriage 10, which is housed by the lower guide channel 20c of the running rail 20 The horizontal running rollers 18a, b of the third set of running rollers, which are also configured as narrow running wheels, are disposed one behind the other on the inner side of the connecting section 11a in the longitudinal direction of the SLR rail. The axes A3 and A4 of the rollers 18a, b of the third set of rolling rollers are preferably in the plane of vertical symmetry E1, with respect to which are also arranged the rollers 16a, b and 17a, b of the first and the second set of mirror rollers in mirror symmetry. The axes A3 and A4 of the rollers 18a, b of the third set of rollers can also be found, however, to influence the feed behavior, in particular for the purpose of self-centering, diagonally with respect to the axis of symmetry E1 .

The first horizontal rolling roller 18a is arranged higher at a predetermined measurement than the second horizontal rolling roller 18b, so that when two successive rolling carriages, such as, for example, the rolling carriages 10a and 10b, are introduced. one on the other saving space, the first horizontal rolling roller 18a of one of the rolling carriages 10a ends up being above the second horizontal rolling roller 18b of the other running carriage 10b.

To achieve the step described in height, the second horizontal roller 18b is rotatably housed directly on the upper side of the joint section 11a, while the first horizontal roller 18a is rotatably disposed at the free end of a second angular support 15, which is configured, in particular shaped, so that it protrudes rearwardly beyond the second horizontal roller 18b and so that it is bent in the longitudinal direction of the SLR rail, on the inner side of the joining section 11a.

In order for the goods of the rolling carriage 10 to be able to transport goods in a suspended manner, a fastening section 12 in the form of an eyelet or in the form of an eyelet is provided in the body of the trolley 11 starting from the junction section 11a exiting downwards. an eye 21, in which a good to be transported can be detachably fixed or hooked. When something is hung in the buttonhole, it slides due to the shape of the eye 21 by itself to the lowest position, which lies below the rollers 16a, b of the first set of rollers, so that an introduction of direct load on these rollers is guaranteed.

In order that the rolling carriage 10 advancing on the rolling track 20 can be mechanically influenced from the outside or can exert a mechanical influence towards the outside, a coupling element 19a or 19b, in particular in the form of a pin, is arranged it protrudes from the first and the second arm 13a and 13b in each case transverse to the longitudinal direction of the SLR rail towards the outside, through which a coupling can be made on the roller carriage 10 with an external element. However, other types of coupling elements are also conceivable.

The roller carriage body 11 is preferably configured as a one-piece casting and may consist of a suitable plastic material or also of metal.

The transport system constructed with the rolling carriages according to the invention is characterized not only by a safe functioning in operation, of reduced wear, in particular also by gravity transport, but also possible due to its function of nesting the carriages of rolling, higher transport yields and a clearly increased storage density.

Claims (12)

Rolling carriage (10) for a conveyor system (100) guided on rails, in particular a gravity conveyor, transport system (100) in which a plurality of carriages (10a-e) of the carriage are mounted same type on a track (20) extending in a longitudinal direction of rail, one after the other in the longitudinal direction of the rail and displaceably in the longitudinal direction of the rail, the roller carriage (10) presenting for the guidance by the rolling rail (20) in longitudinal rail direction (SLR) disposed one after the other a first and a second set of vertical rolling rollers (16a, b; 17a, b), which are mounted rotatably in a body of roller carriage (11) in each case transversely with respect to the longitudinal direction of the rail around a corresponding axis (A1 or A2) and spaced apart from one another along the corresponding axis (A1 or A2), characterized in that the separation inner (D1) of the rollers in the first set of rolling rollers (16a, b) is larger by a predetermined measure than the outer separation (D2) of the rollers in the second set of rollers of rolling (17a, b), and why the housing of the first and second sets of rolling rollers (16a, b; 17a, b) is configured in the roller carriage body (11) in such a way that two successive trolleys (10a-f) can be inserted into each other saving space, when the second set of rollers is left running ( 17a, b) of one of the rolling carriages (10a) between the rollers of the first set of rollers (16a, b) of the other running carriage (10b). Rolling carriage according to claim 1, characterized in that the carriage body (11) is configured to surround the running rail (20) and comprises a first and a second arm (13a, 13b), which are separated one of the other transversely with respect to the longitudinal direction of rail and joined together through a joining section (11a), and in that the rolling rollers (16a, b) of the first set of rolling rollers are arranged in a manner rotating in each case by the inner side of the arms (13a, b). Rolling carriage according to claim 2, characterized in that on the inner sides of the arms (13a, b) next to the rollers (16a, b) of the first set of rolling rollers and beyond the rollers of rolling (16a, b) of the first set of rolling rollers are configured, in particular shaped, first angular supports (14a, b) projecting inwards and that are bent in longitudinal direction of rail (SLR), at whose free ends are The rollers (17a, b) of the second set of rollers are rotatably arranged. Rolling carriage according to claim 1, characterized in that the rollers (16a, b; 17a, b) of the first and second set of rolling rollers are arranged in mirror symmetry with respect to a plane of vertical symmetry ( E1) of the rolling carriage (10). Rolling carriage according to claim 4, characterized in that the roller carriage has a third set of rollers with a first and a second horizontal roller (18a, b), by which the rollers (18a, b) horizontals of the third set of rolling rollers are arranged on the inner side of the connecting section (11a) one after the other in the longitudinal direction of the rail (SLR), because the axes (A3, A4) of the running rollers (18a, b) of the third set of running rollers are in the vertical symmetry plane (E1) of the running carriage (10), and because the first horizontal running roll (18a) is arranged at a rate of one measure predetermined height higher than the second horizontal rolling roller (18b), so that when two successive rolling carriages (10a-f) are introduced into each other saving space, the first horizontal rolling roller (18a) of one of the Rolling cars ends being above the second horizontal rolling roller (18b) of the other running car. Rolling carriage according to claim 5, characterized in that the second horizontal rolling roller (18b) is rotatably arranged directly on the upper side of the connecting section (11a), and that the first rolling roller ( 18a) is arranged rotatably on the free end of a second angular support (15), which is configured, in particular shaped, beyond the second horizontal rolling roller (18b), projecting inwards and bent in the longitudinal direction rail (SLR) on the inner side of the joining section (11a). Rolling carriage according to one of claims 1 to 6, characterized in that a fixing section (12) is provided on the roller carriage body (11). Rolling carriage according to one of claims 1 to 7, characterized in that the rolling rollers of the first set of rollers (16a, b) are designed as ball bearings which are overinjected with a roller body. Rolling carriage according to claim 8, characterized in that the rollers of the first set of rollers (16a, b) are wider than the rollers of the second set of rollers (17a, b). Rolling carriage according to claim 2, characterized in that a coupling element (19a, b) is arranged, in particular in the form of a pin, which protrudes outwards from the first and the second arm (13a, 13b) to the outside. each case transversely with respect to the longitudinal rail direction, through which a coupling on the running carriage (10) can be made with an external element. Rolling carriage according to one of the claims 1 to 10, characterized in that the roller carriage body (10) is designed as one piece. Transport system, comprising at least one running carriage (10; 10a-e) according to one of claims 1 to 11, as well as at least one running rail (20) adapted to the running carriage (10; 10a) -and).